45181604 has 12 divisors (see below), whose sum is σ = 85150044. Its totient is φ = 20853024.

The previous prime is 45181603. The next prime is 45181607. The reversal of 45181604 is 40618154.

It can be written as a sum of positive squares in 2 ways, for example, as 29181604 + 16000000 = 5402^2 + 4000^2 .

It is not an unprimeable number, because it can be changed into a prime (45181603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434387 + ... + 434490.

It is an arithmetic number, because the mean of its divisors is an integer number (7095837).

Almost surely, 2^45181604 is an apocalyptic number.

It is an amenable number.

45181604 is a deficient number, since it is larger than the sum of its proper divisors (39968440).

45181604 is a wasteful number, since it uses less digits than its factorization.

45181604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868894 (or 868892 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 45181604 is about 6721.7262663694. The cubic root of 45181604 is about 356.1671667886.

Adding to 45181604 its reverse (40618154), we get a palindrome (85799758).

The spelling of 45181604 in words is "forty-five million, one hundred eighty-one thousand, six hundred four".